Locate the interior and engine compartment power distribution panels first to identify the correct circuit tied to a malfunctioning system such as headlights, radio, or power seats. The cabin unit sits behind the passenger side kick panel, while the under-hood unit is positioned near the battery and contains higher load protection elements.
Each slot is marked with a number and amperage value, commonly ranging from 5A to 40A. Lower ratings are assigned to control modules and interior electronics, while higher values protect systems like trailer connections, blower motor, and anti-lock braking components.
Use the cover label or service manual chart to match slot numbers with functions. For example, a 10A position may control lighting circuits, while a 20A or 30A position may be linked to power outlets or seat adjustment motors. Always verify both the number and rating before removing or replacing any insert.
Keep spare inserts and a puller tool inside the vehicle for quick checks during electrical issues. Visual inspection of the metal strip inside each piece often reveals the cause of faults without advanced diagnostic tools.
Fuse box locations in 2013 Ford F150 Lariat cabin and engine compartment
Check the passenger side kick panel first to access the interior power distribution unit that controls most low-current systems. Remove the trim panel near the right footwell to reveal a compact block with numbered slots and relays. This area is used for electronics such as infotainment, interior lighting, and control modules.
The engine compartment unit is mounted near the battery on the driver side, protected by a sealed plastic cover with locking tabs. Press the clips and lift the lid to access high-current links and relays responsible for major systems like cooling fans, trailer wiring, and braking control.
Use both locations during diagnostics, since some systems rely on protection elements in separate panels. Interior circuits usually handle signals and accessories, while the under-hood assembly distributes power to heavy-load components.
| Location | Access Point | Typical Systems |
|---|---|---|
| Cabin panel | Passenger side kick panel | Audio, interior lights, control modules |
| Engine compartment | Near battery under hood | Cooling fans, ABS, trailer circuits |
Complete fuse diagram with slot numbers amperage ratings and functions
Read the numbered layout on the cover and match each position before removal to avoid disconnecting the wrong circuit. Each slot is assigned a specific number and current value, allowing quick identification of the protected system.
Interior panel positions typically include low to mid-range values such as 5A, 7.5A, 10A, 15A, and 20A. These handle electronics, dashboard systems, and accessory power. Under-hood positions include higher ratings like 30A and 40A, supporting heavy electrical loads.
Focus on both the number and amperage printed on each insert, since identical ratings can serve different circuits depending on position. The cover label provides a direct mapping between slot number and system name.
Common assignments in the cabin panel include:
- 5A–7.5A: control modules, memory circuits
- 10A: lighting controls, signal systems
- 15A: infotainment, auxiliary outlets
- 20A: power windows, seat controls
Typical assignments in the engine compartment include:
- 20A–30A: fuel pump, ignition components
- 30A: blower motor, trailer connectors
- 40A: cooling fans, ABS module
Use the slot numbering sequence printed inside the cover to locate a specific circuit quickly, especially during roadside troubleshooting. Numbers are arranged in rows, often grouped by system type for easier identification.
Never substitute a higher-rated insert, as it can lead to overheating of wiring and damage to connected components; always match the exact value and slot position shown in the layout chart.
Steps to check blown fuses and replace them correctly in F150 Lariat 2013
Pull the suspected insert using a plastic extractor and inspect the metal strip inside; a broken or blackened link confirms failure. Check related systems first, such as lights or power outlets, to narrow down the exact slot. For accuracy, use a multimeter in continuity mode; a working piece shows a closed circuit, while a damaged one does not.
Install a replacement with the identical amperage rating printed on top, such as 10A, 15A, or 30A, and press it firmly into the same numbered position. Avoid using higher values, as this can overheat wiring and damage components. Ensure the new insert sits fully seated and aligned with the contacts.
Test the system immediately after replacement and monitor for repeated failure. If the new insert fails again, inspect wiring, connectors, or the connected device for short circuits instead of replacing parts repeatedly.